document.write( "Question 821735: purple punch is made by mixing red juice and blue tonic soda. a perfect purple punch is 50% red and 50% blue. if i have 2 liters of punch which is 70% blue ( and 30% red). how much red juice do I need to add to make perfect purple punch \n" ); document.write( "

Algebra.Com's Answer #494360 by richwmiller(17219) $\"\"$ $\"About$

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.70*2=.5*(x+2)
\n" ); document.write( "x = 0.8
\n" ); document.write( "add .8 liters of red to make it half and half.
\n" ); document.write( "you now have 1.4 liters of blue
\n" ); document.write( "and .6 liters of red
\n" ); document.write( "if you add .8 liters red to the .6 liters red you will have 1.4 liters of each\r
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